They use their hats when a blow is expected. They put them on and leave.
Simple. If you don't understand that metaphor, think "searoom"

From: Wayne.B
Date: 11/10/2004 9:31 AM Eastern Standard Time
Message-id:

On 10 Nov 2004 00:26:11 GMT, (JAXAshby) wrote:
HEAVY kellets (25# each, and often two or three on a rode) are sometimes
used
to overcome the inherent dangers of an all chain rode, at least up to 35+
knots
of wind, then chain and nylon is used.

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How many kellets, and how much nylon rode, do they use on a
supertanker? Or the QE2?